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IX. Further additions to Mr. Marshall's Cattdogiie of 

 British Iclineumonidte. By John B. Briduman. 



[Read May Srd, 1882.] 



Having, during the past autumn and winter, had the 

 opportunity of examining several hundred Ichneumons, 

 it is needless to say that among so many specimens of 

 this neglected portion of the order Hymenoptera many 

 European species have occurred, and not only have I de- 

 tected several species new to Britain, but no less than 

 five hitherto unrepresented European genera have been 

 added, while some few species apparently new to Science 

 are here described. Although these additions have been 

 made, many insects have been examined which I have 

 been unable to name at present, more especially in the 

 genus Hemitelcs, which genus I believe contains less than 

 a hundred named species, and I think I may fairly say 

 that quite one-half of the Hemiteles I have seen appear to 

 be unnamed ; indeed, except Foerster's Monograph of 

 Pezomachus, Thomson's treatment of the genus Cri/ptus, 

 in his 'Opuscula,' and Taschenberg's revision of the 

 Cryptides, the knowledge of this family {Cryptides) is 

 but little farther advanced than it was when Graven- 

 horst's ' Iclmeumonologia Europaea ' appeared ; Foerster 

 has made an elaborate division of the genera, but 

 unfortunately has given no idea as to the species com- 

 posing his new genera. I have not, therefore, ventured 

 to describe any new species of Hemitelcs. I have taken 

 several winged males which I feel quite convinced belong 

 to the genus PezomacJius, but of the association of the 

 sexes of this genus but little is known ; this can only be 

 done by breeding, and even then it is apparently but 

 seldom that the two sexes are bred together. Two years 

 ago I bred from a cluster of cocoons of one of the 

 BraeoimUe seventeen specimens of Heminuichus fasciatns, 

 of which sixteen were female and one only male : last year 

 I bred the same species from spiders' nests ; there were 

 six or seven specimens, and all were males. I also bred 

 from another Braconid several specimens of Pezomachus 



TRANS. ENT. SOC. 1882. PART II. (jULY.) 



